Your mission is to inject <script>alert(1);</script> into this script, and make it popup a javascript alert.The checkit() function tests your injected string for a few static solutions.Please try to use as less characters as possible and inject the exact same string as above.

Note: This challenge is simulated, and does only check for a few static solutions.The real XSS flaw got silently fixed, because of security concerns. Thanks noother!So even if you inject the right code, it will not execute anymore.